Figure 5.
Computation of value from component parts in the anterior cingulate cortex. A, Overlapping effects of quality, quantity, and their interaction in the ACC. A conjunction analysis revealed overlapping representations of each component (puncorrected < 0.05; green) in the ACC, suggesting a nexus for the computation of value. A complementary analysis using an explicit representation of integrated value as a parametric modulator identified the same region (pFWE-corrected < 0.001; turquoise). Time course displayed for illustration purposes. B, Decision > nondecision trials. The ACC also showed higher activity in trials upon which a decision was made compared with valuation trials (red), overlapping with the conjunction analysis identified in A (green). C, Participants with stronger representations of quality in the IFG showed stronger representations of quality in the ACC (r = 0.63, p < 0.001). D, Quality sensitivity in IFG was unrelated to quantity coding in ACC (r = 0.04, p = 0.83). E, Quantity sensitivity in IPS was unrelated to quality coding in ACC (r = −0.14, p = 0.50). F, Participants with stronger representations of quantity in the IPS showed stronger representations of quantity in the ACC (r = 0.68, p < 0.001). Each point is one participant.